Number of (n+1)X(n+1) 0..2 arrays with the minimum plus the maximum equal to the lower median plus the upper median in every 2X2 subblock.

A235894

Number of (n+1)X(n+1) 0..2 arrays with the minimum plus the maximum equal to the lower median plus the upper median in every 2X2 subblock.

Terms

    a(0) =33a(1) =641a(2) =21697a(3) =1384257a(4) =160019457a(5) =35883075329

External references